Just here to add a couple things that have probably already been pointed out.
I play in Action camera:
- Siphon doesn't work in Action Camera, you can activate it but it goes on a 3 - 4 second cooldown but nothing actually happens as a result of activating the skill.
- Twilight Combo (Sceptre/Dagger DW skill) doesn't work in Action Camera and is, in my experience, one of the more useful condi DPS options if built correctly, so I cannot activate a key DPS skill in Action Cam.
I tested and both work if I turn Action Camera off (I can't play the game in any mode but this unfortunately).